# ---- Build stage ---- FROM node:20 AS builder WORKDIR /app COPY package.json package-lock.json* ./ RUN npm install COPY . . RUN npm run build # ---- Production stage ---- FROM nginx:alpine # Copy built React app COPY --from=builder /app/dist /usr/share/nginx/html # Replace nginx config COPY nginx.conf /etc/nginx/conf.d/default.conf EXPOSE 80